Reform of purification and prayer operates at two levels. One establishes the dignity and obligation of worship; the other concerns how it is correctly and consistently performed. A complete understanding of prayer requires both.
It is insufficient merely to know that devotion or supplication is valued. Prayer is an instituted practice whose observance involves timing, community, and related practical arrangements. A concise Qur’anic command should not therefore be isolated from its authoritative practical elucidation.